   (into {}
     (for [x (range board-size)
           y (range board-size)]
-      [[x y] :cell/cross]
+      [[x y] :cell/empty]
       )))
 
 (defonce app-state

  [[x y] [dx dy]]
  [:line {:x1 x :y1 y
          :x2 (+ x dx) :y2 (+ y dy)
          :fill "none" :stroke-width 0.03 :stroke "red"}
   ])

(defmethod render-cell :cell/cross
  [_ x y]
  [:g
   [draw-cross-line [x y] [1 1]]
   [draw-cross-line [x (inc y)] [1 -1]]
   ])


(defn tictactoe
  []

     [:svg.board
      {:view-box (str "0 0 " board-size " " board-size)
       :style {:max-height "500px"}}]
     (for [x (range board-size)
           y (range board-size)]
       [render-board-cell @app-state x y]
       ))
   ])

